68312715 has 16 divisors (see below), whose sum is σ = 115730208. Its totient is φ = 34290176.

The previous prime is 68312689. The next prime is 68312729. The reversal of 68312715 is 51721386.

It is a cyclic number.

It is not a de Polignac number, because 68312715 - 2¹⁷ = 68181643 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133692 + ... + 134201.

It is an arithmetic number, because the mean of its divisors is an integer number (7233138).

Almost surely, 2^68312715 is an apocalyptic number.

68312715 is a deficient number, since it is larger than the sum of its proper divisors (47417493).

68312715 is a wasteful number, since it uses less digits than its factorization.

68312715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267918.

The product of its digits is 10080, while the sum is 33.

The square root of 68312715 is about 8265.1506338360. The cubic root of 68312715 is about 408.7902372270.

The spelling of 68312715 in words is "sixty-eight million, three hundred twelve thousand, seven hundred fifteen".